The Rosalea showing is located east of Woodcock Station, 270 metres north of the railway, and 10 kilometres west of Kitwanga.

The area is underlain by sediments of the Middle Jurassic to Upper Cretaceous Bowser Lake Group, which have been intruded by Tertiary (and possibly younger) granitic Coast Plutonic Complex rocks.

A quartz vein, hosted in sandstone, is exposed by an opencut. The sandstone strikes 030 degrees and dips 40 degrees north. The lenticular quartz vein, 0.45 metre average width, occurs along a shear or fault zone which strikes 310 degrees and dips steeply southwest. The vein is locally conformably to the bedding and is mineralized with pyrite and minor galena. A sample of the mineralized quartz assayed no values for gold, silver or lead.

In 1929, the claims were owned by W.C. Little and D. Wilson.